Patent GB-212987-A (GB)
Title: Improvements in and relating to ruling apparatus, for use in connection with cylinder and like printing machines
IPC: B41G3/00
Filed: 1922-12-19
Abstract: 212,987. Cogon, Y. B.-L. Dec. 19, 1922. Ruling machines and appliances.-A ruling- attachment for cylinder and like printing- machines comprises a frame which carries the ruling-disc spindle and means for supplying ink thereto and is rotatably mounted on a shaft parallel with the impression cylinder. The frame is so supported at the rear of the shaft as to press the discs yieldingly into contact with the impression cylinder. The attachment may include two ruling-devices, one situated above the other, and the impression cylinder may carry cams for tripping the ruling-discs as required. A spindle b carrying ruling-discs c, fixed in adjusted position by means of clamping-rings m', is rotatably mounted in a frame consisting of side plates a connected by bolts g and fixed by clamps a<1> to a pivotal shaft k or rotatably mounted on a fixed shaft. The discs engage an inking-roller e supplied by a suction cloth e<1> from a trough j. The frame is supported by springs n encircling posts o integral with blocks o<1> nesting on a rod q, these posts passing through lugs p on the plates a and having nuts q<1> for adjusting the position of the frame. The bearings of the shaft b, or of the inking-roller shaft or of both, are adjustable, as by screws d<2>, to vary the pressure between the rollers. In a modification, a second ruling-device is provided, the side plates of the carrying frame being pivoted to the plates a near to the shaft k. In place of having the nut q' an'd a screw-thread on each post o, a rack is formed on its side and a worm meshes therewith. Fig. 3 shows another arrangement comprising two ruling-devices. Two frames comprising side plates a and u respectively, each carrying ruling- disc c, inking-roller e, &c., are pivotally mounted on pins 2 carried by the upper parts 3 of clamps 1 fixed on the shaft k. Mounted on the pins 2 are also outer plates 5 connected by a bar 5a and adjustably fixed to a depending stationary bracket 6 by a screw 6a and slot '7, this arrangement allowing, by loosening the screw 6<a>, the whole attachment to swing down for replacements &c. The ruling-devices are pressed against the impression cylinder l by springs 10 attached at one end to the plate 5 and at the other to the plates a and u respectively. Movement is limited by means of stop-pins 11 projecting from the plates a, u and sliding in slots 12 in the plate 5, these pins engaging adjustable screw stops 13. The pairs of plates a and u are connected by flat bars 8 over which the ink troughs are hooked. Inking-apparatus. - The ruling-discs c are inked by a roller e supplied by a suction cloth e<1> one end being secured within an ink trough j and the other resting on the roller e. To allow ready access to the inside of the trough, the rear side j<1> is hinged at j<2>, a spring catch j<3> being provided for retaining this side in the raised position. The trough, in a modified arrangement, is adapted to be hooked over a flat bar 8, Fig. 3, extending across the ruling-attachment. Tripping-arrangements.-The frame carrying the ruling-discs is tripped as required by means of cam blocks s<1>, Fig. 1, acting on a roller r on the end of the ruling-disc shaft b, these blocks being adjustably received within a strap s of dovetail channel section secured to the impression cylinder l. Alternatively, an L-shaped bar 14, Fig. 3, may be secured to the impression cylinder and cam blocks 16 fixed thereto by screws 15.